You should have an extra front and rear wheel if possible, an extra set of tires and a set of rain tires on wheels if you plan on racing on rain days. We got hit last year ( it was my son’s rookie year too) and had the rear axle get bent. I didn’t have a spare so we went home after one practice session. I have 2 spares now. You will also need a decent assortment of nuts, bolts and washers and make sure you have plenty of cotter pins and safety wire handy. A couple fuel filters and some small hose clamps are a good idea too. Good luck with your rookie season, my whole family had a great time last year and I’m sure you guys will too.